Tianwen No. 1 Mars Energy particles analyzer scientific achievement release

On August 7, the reporter learned from the Institute of Modern Physics of the Chinese Academy of Sciences that recently, the Macau University of Science and Technology, the Chinese University of Geosciences (Beijing), the Institute of Modern Physics of the Chinese Academy of Sciences, the Lanzhou Institute of Space Technology, the University of Science and Technology of China, the United States Alaba, the United States Alaba The research team composed of the Malaysian University Henzville and the National Space Science Center of the Chinese Academy of Sciences used Tianwen No. 1 Mars Energy particles analyzer to obtain the first scientific achievement. Study discussed a load -based load on the orbit observed in the ground fire transfer track. Sun high -energy particle incident. Related results were published in the "Period Physics Magazine Express" a few days ago, and were selected by the American Astronomical Society (AAS) as a highlight and reported them.

The Mars Energy particles analyzer is the first load in my country to study the interstellar and near Mars space radiation environment. It was jointly developed by the Institute of Modern Physics and Lanzhou Space Technical Physics of the Chinese Academy of Sciences. The detector was launched, and the detection task was officially opened.

On November 29, 2020, the Mars energy particle analyzer analyzer on the ground fire transfer orbit is 1.39 astronomical units (AU) from the sun, and observed the first large -scale high -energy particle incident of the 25th solar activity cycle.

At the time of the incident, Tianwen No. 1 is similar to the same magnetic line as the earth, which enables Tianwen No. 1 and near the Earth spacecraft to observe high -energy particles from the same source area in the same source area. High -energy particle provides a valuable opportunity to spread the propagation of the magnetic space.

Understanding the acceleration and communication mechanism of high -energy particles of the solar has always been one of the important topics of spatial physics and spatial weather research. Once the near -ground environment enters space and loses the protection of the earth's magnetic field, astronauts and spacecraft will inevitably be exposed to strong high -energy particles radiation. Unlike the long -term stable galaxy cosmic line, the occurrence of high -energy particles in the solar is occasional and unpredictable. The energy particles generated during the outbreak of this type of incident usually originated from the rocker acceleration process of the outbreak of the sun and the daily coronal material. The environment has a huge impact, and it also pose a huge threat to space tasks such as manned space and deep space detection.

Through comparative analysis, during the incident on November 29, 2020, Mars energy particles analyzer and proton observation data of spacecraft near the Earth found that the magnetic force lines associated with Tianwen No. 1 and the spaceware near the Earth did not connect to the surface of the sun. The outbreak source area and inter -planetary waves means that high -energy particles must cross the magnetic line to reach Tianwen No. 1 and near the Earth spacecraft. In addition, the research team also found that the proton energy spectrum shape observed at the two positions is very similar, both of which are manifested as a dual -powered spectrum, and their proton intensity time curve also has a similar evolutionary trend during the attenuation stage of the high -energy particles incident of the solar high -energy particles, presenting the presentation, presenting it, presenting it, presenting it, presenting it, presenting it, presentation A typical reservoir phenomenon. The research team believes that the dual -power law spectrum is likely to be generated in the source area of ​​the swarm acceleration, and the vertical diffusion effect during the transmission process is a key factor in explaining the phenomenon of the storage pool in the incident. In addition, the research team also discussed the radial correlation and magnetic line length correlation of the peak strength of the solar high -energy particle event.

In this solar high -energy particle incident, the observation data of Mars energy particles analyzer and near -ground spacecraft have very good consistency, which indicates that the function and performance of the Mars energy particle analyzer instrument meet the design expectations. The data measured by the instrument The quality is reliable, laying a good foundation for the research of the subsequent Mars detection data. It is expected to help better understand the Mars radiation environment and plan deep space detection tasks.

- END -